Fate and transport of glyphosate and aminomethylphosphonic acid in surface waters of agricultural basins

Abstract

Glyphosate use in a watershed results in some occurrence in surface water; however, the watersheds most at risk for the offsite transport of glyphosate are those with high application rates, rainfall that results in overland runoff and a flow route that does not include transport through the soil.

Re-registration Challenges of Glyphosate in the European Union

“…Italy (Lombardy Region) up to 96 Sampling intensity increased due to more concern about glyphosate residues during than previously, 2008Di Guardo and Finizio, 2018 analysis methods of better sensitivity and accuracy (Huhn, 2018). Glyphosate and AMPA were found to emerge in surface water by leaching from agricultural areas in the US and Canada (Edwards et al, 1980;Feng et al, 1990;Payne et al, 1990;Payne, 1992;Battaglin et al, 2005Battaglin et al, , 2009Kolpin et al, 2006;Struger et al, 2008;Shipitalo and Owens, 2011;Coupe et al, 2012;Glozier et al, 2012) among others by the US Geological Survey (Kolpin et al, 2006), at concentrations up to 5,200 and 400 ng/l, respectively in the US North Appalache and the Midwest (Battaglin et al, 2005(Battaglin et al, , 2009 in regions, where the use of glyphosate-based pesticide formulations is substantial e.g., due to the cultivation of GT (RR) crops (Cuhra, 2015). Glyphosate has also been indicated as a significant water pollutant from intensive agriculture in Mexico (Ruiz-Toledo et al, 2014).…”

“…Glyphosate residue contamination has been demonstrated to correlate with sources of agricultural applications (Payne, 1992;Coupe et al, 2012) corresponding to GM crop cultivation (Barceló and Hennion, 1997;Skark et al, 1998;Australian Academy of Technological Sciences, and Engineering, 2002;Ramwell et al, 2002;Peruzzo et al, 2008;Aparicio et al, 2013;Davis et al, 2013;Mardiana-Jansar and Ismail, 2014;Lupi et al, 2015;Ronco et al, 2016;Caprile et al, 2017;, post-harvest chemical desiccation (Shipitalo and Owens, 2011;Soracco et al, 2018) or other technologies in intensive agriculture e.g., biomass production of industrial crops (Mardiana-Jansar and Ismail, 2014). Moreover, non-agricultural or urban uses of FIGURE 4 | Maximal residue levels (µg/l) of glyphosate (black) and AMPA (gray in parentheses) in surface and ground water reported worldwide.…”

Organic phosphorus in the aquatic environment

“…In part a result of the advent of genetically modified corn and soybean that are resistant to glyphosate, the amount of glyphosate applied to crops in the United Sates increased 8-fold between 1992 and 2007. [103] Identification It was only with the application of 31 P NMR spectroscopy to explore P speciation that phosphonates were identified as potentially important fractions of dissolved and particulate P in aquatic samples. [104,105] The C-P bond in phosphonates has a specific resonance at 25 ppm in 31 P NMR spectra which is substantially different from resonances associated with other P bonds to unequivocally identify phosphonates within a sample.…”

Death as a Drug Side Effect in FAERS: Is Glyphosate Contamination a Factor?

“…Furthermore, we believe we have identified a class of patients suffering from chronic kidney disease who statistically and collectively exhibit a profile of symptoms that can be explained as a consequence of chronic exposure to glyphosate in the ingested food and water. Our hypothesis is based, in part, on the increasing amounts of glyphosate found in food, air [3] [4], rain [3] [5], groundwater [5], surface water [4]- [6], soil [5], seawater [7], human serum [8] and urine [9], and even in samples of marijuana [10]. Formal testing of the suspected drugs and ingested foods for glyphosate contamination can and should be done to validate our hypothesis.…”